Automated power supply monitoring and control system

Introduction

Power supply monitoring and control system (PSCS) is designed
for automation of delivery, transformation, distribution and
consumption of electrical power.

Scope of Automation

Electrical power metering and energy demand planning;

Electrical power supply management;

Electrical power quality control;

Decision-support tools for optimization of composition,
operation modes and planning of electrical equipment maintenance
works based on analysis of the accumulated data concerning mode and
energy demand parameters and equipment sate estimation.

Structure

Electrical power metering subsystem.

Power meters installed at metering points register and store
data about active and reactive power in nonvolatile memory. Meters
are polled by metering controllers.

Electrical power quality control subsystem.

Quality control devices are installed in high voltage units of
closed switchgears.

Telecontrol subsystem.

The subsystem monitors and controls feeders and sectional
cubicles of closed switchgears, integrated transformer substations
and control system boards, measures current and voltage at bus
sections, and interacts with other systems (e.g. automatic
distribution systems, diesel power stations, emergency detector,
microprocessor relay protection and automation devices, heat
meters, soft starters, etc.). The subsystem is based on PLCs
installed straight in cubicles or separate enclosures. PLCs have
modular design and can be configured depending on types and amount
of signals they handle.

All subsystems are integrated in a single server case equipped
with commutators, routers and servers. The server case also
provides connection to other enterprise automation systems.

Operator workstations provide HMI and process visualization.
Event log is visualized using a line printer.

Benefits

Versatility

PSCS data collection and processing system enables application
of end instruments with different configurations and of different
manufacturers (including foreign producers);

Modular design

PCSC is designed with respect to individual features of the
enterprise utilities and can be expanded in compliance with output
expansion. A phased placing of the system into operation is
possible if the establishment of PCSC for the utilities as a whole
is irrational on technical or financial grounds;

Efficiency

PCSC provides cost effectiveness due to energy consumption
decrease, and rational management of enterprise utilities. Data
provided by PCSC can be used for calculations of necessary energy
consumption in case of changing enterprise structure or utilities
extent.